Compressed memory access control method, device and system

Abstract

Embodiments of the present invention provide a compressed memory access control method, an apparatus and a system. The method comprises: receiving a read request message sent by a memory controller, wherein the read request message comprises an actual address of to-be-read data; according to the actual address of the to-be-read data, querying a memory mapping relationship table for a physical address segment corresponding to the actual address, wherein the memory mapping relationship table records a mapping relationship between the actual address and the physical address segment of a memory chip; reading data stored in the physical address segment from the memory chip and obtaining the to-be-read data corresponding to the actual address; and returning the to-be-read data to the memory controller. The embodiments of the present invention can process the compressed memory and reduce a problem of a bandwidth resource waste brought in prior compressed memory access. In addition, data can be transferred in compressed data mode between a processor and the memory chip during a memory access process, so that a bandwidth resource occupied for memory access can be further reduced.

Description

technical field [0001] The embodiments of the present invention relate to computer technology, and in particular to a compressed memory access control method, device and system. Background technique [0002] In computer systems, the performance of processor access to memory is an important performance index of computer systems, especially with the development of multi-core processor computer technology, memory access performance has become one of the key factors restricting the development of computer technology. Among them, the use of memory compression technology is a technology that can improve the performance of processor access to memory. It stores data in a compressed format in the memory. When the processor needs to read data, it can directly read the compressed data. , in this way, in the case of reading data of the same length, the bandwidth for accessing the memory can be saved, the access efficiency of the memory can be improved, and the physical storage space of ...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a compressed memory access control method, device, and system, which can overcome the problem of bandwidth waste caused by accessing compressed memory in existing compressed memory technologies, and improve memory access performance

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